From: Stan Cox <scox@redhat.com>
Date: Wed, 2 Jun 2021 17:37:45 +0000 (-0400)
Subject: Add hlist macros for use by hlist_add_tail_rcu
X-Git-Tag: release-4.6~126
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=4755bc45327b71abd48772b2fcb88eb95c445648;p=systemtap.git

Add hlist macros for use by hlist_add_tail_rcu
---

diff --git a/runtime/task_finder_vma.c b/runtime/task_finder_vma.c
index 7d8e11be9..965bbdae4 100644
--- a/runtime/task_finder_vma.c
+++ b/runtime/task_finder_vma.c
@@ -23,6 +23,9 @@ static inline bool atomic_try_cmpxchg(atomic_t *v, int *old, int new)
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,10,0)
 // Added in linux 4.7, backported to rhel 7, not present in rhel 6
+#define hlist_first_rcu(head)   (*((struct hlist_node __rcu **)(&(head)->first)))
+#define hlist_next_rcu(node)    (*((struct hlist_node __rcu **)(&(node)->next)))
+
 static inline void hlist_add_tail_rcu(struct hlist_node *n,
 					   struct hlist_head *h)
 {